JPH05213535A - Method for operating automatic winder - Google Patents

Abstract

PURPOSE: To store a bobbin without requiring an additional storage volume by circulating to guide a vacant bobbin in the case of no supply of a cop to a winding machine when one lot is finished in the machine having the cop with a plurality of conveying loops and a bobbin conveying system. CONSTITUTION: A supply passage 2 for supplying cop along an overall winding machine 1 to a winding position is provided, a preparing section 25 extended from the passage 2 to preparing stations 26 to 28 is branched, and a distributing section 24 for selectively supplying the cop to a reverse belt 3 or the passage 2 is provided at an end of the section 25. A caddy 4 for holding the cop is sent to the passage 2, the cop 4 is circulated to an end of the machine 1 to guide it to the near section 25, and guided to a return belt 22 through a direction changing section 31. When the caddy holding the vacant bobbin 35 is arrived at a conveying passage 13, the bobbin 36 is interchanged with a new cop from a spinning machine, but if this interchanging is not conducted, the bobbin 36 is circulated in the system.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for operating a winder according to the preamble of claim 1.

[0002]

2. Description of the Related Art An automatic winding machine has an automatic transport system for cups and winding tubes. The automatic transport system can have multiple transport loops for the cup and the winding tube. Such transport systems often have a direct connection to the transport system of the spinning machine. In this case, the cup and the winding tube are exchanged at the intersection. Such a transport system is, for example, DE3
It is known from 919542A1. However, this document does not disclose how to do this in the case of lot exchange.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a method of operating an automatic winding machine which can be used in the case of lot exchange.

[0004]

SUMMARY OF THE INVENTION The object of the present invention is to convey an empty winding tube to the winder transport system when a new cup is no longer supplied to the winder at the end of one lot. It was solved by circular guidance in.

It is desired to prevent the spinning machine from being supplied with winding tubes, whereas the supplied cup must be exhausted when one lot is completed. Therefore, the tubes belonging to this lot must be stored.
The solution of the invention allows the storage of windings without the need for additional storage volume.

Advantageous embodiments of the invention are obtained by the features of claims 2 to 4.

If the empty tube between one conveying path of the spinning machine and the adjacent conveying path of the winding machine is replaced by a new cup, the process is finished and the new cup is replaced by a spinning machine. It ends when it is no longer sent from. This transport section should therefore no longer be supplied with empty tubes. This can be done in a simple manner by diverting the empty tube in front of the transport path provided for the exchange and guiding it again into the cup supply path. In this case, in order to prevent unnecessary replacement switching at the winding point by the empty winding tube, the winding tube should be detected by a sensor at the branch point to the winding point and passed through this branch point. Is advantageous. Then, the winding tube goes around the end of the winder and reaches the winding tube return path. A conveying path that extends through the winding point is opened in the winding tube return path. A transport path extending around the end of such a winder is, for example, DE39.
19542A1. In this case, it is advantageous that the cup and the winding tube are conveyed by being vertically inserted into the insertion fitting mandrel of the caddy, the caddy is placed on the transfer belt, and the transfer belt is frictionally carried. The caddy is in this case guided in the transport passage. It has been publicly known, for example, from JP-A52-25139 before such a transport system.

[0008]

Next, the present invention will be described in detail based on one embodiment.

The winding machine 1 has a cup and winding tube transport system having a plurality of transport loops having a partially common transport path. The caddy 4 is transported on this transport path. The caddy 4 holds a cup or a winding tube.
The illustration of the cup or the winding tube is omitted for clarity of the drawing. Along the entire winding machine 1 there extends a supply path 2 for feeding the cup to the winding point. A preparatory section 25 is branched from the supply path 2 and extends from the preparatory stations 26 to 28. Depending on this preparation section 25, the stepwise preparation of the cups can be carried out in a known manner, for example as described in DE-3919542A1. A distribution section 24 is provided at the end of the preparation section 25. The distribution section 24 selectively supplies the cup to the so-called reverse belt 3 or the supply path 2. This distribution section 2
4 is controlled by the last preparation station 28 which checks the cup preparation result. Once the cup has been successfully prepared, the dispensing section 24, which may also consist of a reversible belt, feeds the cup to the reverse belt 3. If the cup has not been prepared with sufficient success, the caddy 4 holding the cup will be sent to the feed line 2, which will lead the cup to a nearby preparatory section 25 or the end of the winder 1. The belt is guided to the return belt 22 through the turning section 31.
The return belt 22 extends parallel to the supply path 2 and likewise along the entire winder. Various preparation sections for cups 2
The division into 5 is likewise described in DE3919542A1 and will not be described in detail.

The reverse belt 3 is switched in the conveying direction at a predetermined time interval, and the supplied cup is wound up at a winding point 5.
Dispense onto a transport path 21 extending therethrough. The winding point 5, that is, the feeding position of each cup and the reverse belt 3
Between the two and two further pre-positions 6 exist for the caddy 4 holding the cup. On the reverse belt 3, a group 7 of caddies with cups patrols and enters the transport path 21 passing through the winding point unless the rearmost back position is occupied. Details of this are likewise described in DE 3919542 A1.
In this case, it should be added that only a part of the circulating caddies is shown in order to make the drawings easy to see. In particular, the transport path 21 is almost always 3
Must have one caddy.

Next, the transport path at the end of the return belt will be described in detail together with the associated processing station.

Reference numeral 9 indicates a so-called residual yarn cup having an amount of residual yarn that can be subsequently processed. This leftover cup 9
Is located beside the remaining yarn detector 33 that detects the amount of yarn still present. The residual yarn detector controls the electromagnet 11 that acts on the iron ring on the caddy 4 and redirects the caddy from the return belt 22 to the sub-transport path 12. The residual yarn cup 9 is sent to the cone preparation device 15 on the sub-transport path 12. This cone preparation device 15 looks for the yarn end in the cup cone regardless of its position and repositions it so that it can be gripped at the winding point. By means of the connecting section 16, the cup thus prepared is again guided to the supply channel 2.
The cone preparation device 15, however, likewise has a detector for checking the preparation result. If the residual yarn cup 9 has not been prepared with sufficient success, the residual yarn cone will reach the feed line 17 and the damming section 18.

The winding tube 8 having a small amount of residual thread, which has been preliminarily conveyed near the end frame 19, is confirmed by the residual thread detector 33 as such, and the caddy 4 holding the winding tube is detected by the electromagnet 11. It is guided to the sub transport path 12. Of course, this winding tube 8 is branched again shortly after, and reaches the winding tube cleaning device 10. An electromagnet, which is additionally controlled by the residual yarn detector 33, may be arranged in this branch portion as well. Illustration of this is omitted due to space limitations. The cleaned tube 8 reaches the return path 20 again or the uncleaned tube 8 is stored in the storage section 1.
8 (see DE3919542A1). The completely empty winding tube 36 discharged from the winding point 5 is likewise fed to the residual yarn detector 33 on the return path 22. The residual thread detector 33 is used for the electromagnet 11 in the normal winding operation.
, The caddy holding the empty tube 36 reaches above the transport path 13. In this transport path 13, the empty tube is replaced with a new cup coming from the spinning machine. This cup reaches the feed path 2 and reaches the unwinding position of the winder in the manner described.

When the lot is finished and no exchange is performed between the empty winding tube and the new cup on the conveying path 13, the conveying path 13 is stopped and the empty winding tube 36 is similarly electromagnetized. It is advantageous to branch to the conveying path 12 via the branch formed by 11. The control device causes the residual thread detector to additionally activate another electromagnet 37 so that the residual thread detector always connects the electromagnet 11 and after the empty winding tube has passed, whereby the empty winding tube 36 Are switched back to the feed line 2 via the transport line 14 for the empty winding 36. Irrespective of this, the residual thread cup 9 confirmed by the residual thread detector 33 is guided to the cone preparation device 15 by not operating the electromagnet 37 after the residual thread detector 33 confirms as the residual thread cup. Get burned. A winding tube having a small amount of residual yarn is also supplied in the form described in the winding tube cleaning device 10. Thereby, all the functions required for these devices are performed even if the empty tube 36 circulates in the system.

A sensor 29 is arranged at each branch from the supply path 2 to the preparation section 25. The sensor 29 senses an arriving empty tube 36 and opens an adjacent switch to allow the caddy 4 holding the empty tube 36 to continue to be transported over the supply path 2. .. by this,
The empty tube is retained in the transport path defined for it. Independently of this, the diverter 30 is also provided for distributing the cups to the preparation section 25 during normal operation of the winder. For example, if there are two preparatory zones 25 as shown in the drawing, the branching device 30 arranged at the first branching portion in the cup feeding direction alternately passes every other cup. be able to. Of course, it is likewise possible to switch after two or more cups. Another possibility is to deflect the next arriving cup or caddy 4 holding it by the outer edge of the last caddy when the section between the feed channel and the first preparation station 26 is filled, This is to continue transporting on the path 2 toward the next preparation section 25.

The moving paths of the empty winding tubes are indicated by the directional arrows 23, 32,
It is shown at 34 and 35. The transport path is of sufficient length to receive all empty tubes 36. This is because the number of caddies 4 in the transport system does not change. In this way, additional reservoirs for intermediate stocking of empty tubes can be saved until lot exchange is complete.

[Brief description of drawings]

FIG. 1 shows the transfer system of the winder in terms of space (a),
The figure shown in (b).

[Explanation of symbols]

 1 Winding machine 2 Supply path 3 Reverse belt 4 Caddy 5 Winding point 6 Preliminary position 8 Winding tube 9 Remaining yarn cup 10 Winding tube purifier 11 Electromagnet 12 Sub-conveying path 13 Conveying path 14 Conveying path 15 Cone preparing device 17 Supplying path 18 damming section 21 transport path 22 return belt 24 distribution section 25, 26, 27, 28 preparation station 29 sensor 30 brancher 33 residual yarn detector 36 empty winding tube 37 electromagnet

Claims (4)

[Claims] 1. A method of operating an automatic winder having a cup and a tube transport system having a plurality of transport loops having a partially common transport path, wherein the winder is completed when one lot is completed. A method for operating an automatic winder, characterized in that when a new cup is no longer supplied to (1), an empty winding tube (36) is circulated in the transport system of the winder. 2. An empty winding tube (36) is branched from a conveying path (13) provided for replacing the empty winding tube (36) with a cup, and is guided to a cup supply path (2). A method according to claim 1. 3. An empty winding tube (36) is detected as such and a supply path (25) to the winding point (5).
Through the end of the winder and through the winding point, the conveying path (21) is open and the winding tube return path (2
The method according to claim 1 or 2, wherein the method is sent to 2). 4. The cup and the winding tube are vertically inserted into the insertion fitting mandrel of the caddy (4) and conveyed, and the caddy (4) is placed on a conveyor belt, and the caddy (4) is conveyed by this conveyor belt. The method according to any one of claims 1 to 3, which is carried along.